Window sash lock



Feb. 27, 1934. J. P. MURPHY WINDOW SASH L ocK Filed Feb. 25, 1933 J1. Maw 127 Zhwentor 3g attorneys Patented Feb. 27, 1934 UNITED STATES PATENT OFFICE 1 Claim.

The present invention relates to window sash locks, the primary object of the invention being to provide means for looking a sliding sash in its closed or partially open position, the locking device being such that it will be fully guarded against operation from a position exteriorly of the window.

An important object of the invention is to provide a locking device of this character including a rod having a plurality of spaced notches formed therein, into which a pivoted looking dog extends, the rod having its lower end extended at right angles and positioned in an opening formed in the sash, securely mounting the rod against movement and insuring excessive force be used in an effort to pry the window open.

Another important object of the invention is the provision of a window sash fastener, which may be easily mounted in the edge of the window sash, eliminating the necessity of making extensive alterations in the window construction to install the device.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawing:

Figure 1 is an elevational view of a window sash lock, constructed in accordance with the invention, a portion of the sash being broken away, illustrating the means for anchoring the rod, carried by the window sash.

Figure 2 is a sectional view taken on line 22 of Figure 3.

Figure 3 is a sectional view taken on line 33 of Figure 1.

Referring to the drawing in detail, a window sash is indicated by the reference character 5, and as shown, is provided with an opening, formed in the side edge thereof, the opening be ing disposed near the bottom of the sash.

Ihis opening accommodates the right angled lower end 6 of the rod 7, which forms a part of the sash lock, the rod being of a length to extend an appreciable distance along the window sash.

Notches 8 are formed along the rod '7, and

are provided with substantially straight lower edges, defining shoulders 9, against which the lip 10 of the dog 11 engages, restricting vertical movement of the sash.

The dog 11 is mounted within the housing 12, which is fitted within an opening formed in the sash frame 13.

A shaft indicated by the reference character 14 extends through the housing 12, and provides a support for the dog 11, there being provided a pin 15, extending through the dog and shaft, for securing the dog to the shaft.

In order that the dog 11 will be urged laterally at all times, to contact with the rod 7, a coiled spring 16 is provided, the spring 16 surrounding 7 the pin 17 extending rearwardly from the dog. The opposite end of the spring 16 rests against the inner surface of the housing 12, as clearly shown by Figure 2 of the drawing.

The shaft 14, is formed with a right angled end 17 providing a handle that rises within the opening 18, formed in the sash frame 13, the opening 18 being normally closed by means of the pivoted closure 19.

From the foregoing it will be obvious that due 8 to this construction, the lip 10 of the dog 11 will normally lie within a notch of the rod 7, engaging the shoulder of the notch with the result that vertical movement of the sash will be prevented.

Should it be desired to raise the sash, it is only necessary to rotate the shaft 14, by turning the handle 17, which movement causes the lip 10 of the dog to disengage the shoulder. When the dog is disengaged, the window sash may be read- 0 ily raised.

Having thus described the invention what is claimed is:

The combination with a pivoted sash latch, of a keeper embodying a rod positioned in a groove formed in one edge of the sash intermediate the ends of the sash, the groove defining a wall at one end thereof, said sash having a bore at the opposite end of the groove, said rod having a right-angled end fitted in the bore, at the op- .100 posite end of the rod engaging the wall at the end of the groove securing the rod to the sash, and said rod having notches adapted to receive a pivoted latch member.

JOHN P. MURPHY. 

